chris@arrakis.nevada.edu (Chris Hayes) (10/20/89)
Hello Netland. I was recently disassembling an XCMD. Along the way, I ran
into
a large group of _Pack4 calls. These are the calls for The Floating Point
Package.
According to Inside Macintosh, (II - 406) : {paraphrased}
The macros for calling the Floating-Point routines push a two-byte
opword onto the stack and then invoke _Pack4. These macros are fully
documented in the Apple Numerics Manual.
It's the last part that is the problem. I need to figure out what each
call is. Unfortunately that is all IM says about _Pack4. Does anybody know
where I can find the list of opwords? I know of no local copies of the Apple
Numerics Manual. Does anyone know of an FTPable list? Any one care to type
one in? I don't need lengthy documentation, just a table of the Opwords and
what they mean.
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| UseNet: chris@arrakis.nevada.edu | us like the food and shows! |earleh@eleazar.dartmouth.edu (Earle R. Horton) (10/21/89)
In article <934@unsvax.NEVADA.EDU> chris@arrakis.nevada.edu.uucp (Chris Hayes) writes: >Hello Netland. Howdy! > The macros for calling the Floating-Point routines push a two-byte >opword onto the stack and then invoke _Pack4. These macros are fully >documented in the Apple Numerics Manual. > > It's the last part that is the problem. I need to figure out what each >call is. Unfortunately that is all IM says about _Pack4. Does anybody know >where I can find the list of opwords? It's in the assembler header files for MPW. The whole set can be obtained using anonymous ftp from apple.com. You want /pub/dts/mac/mpw/aincludes.hqx. Extract "SANEMacs.a" from this and you should have all the info you need. I don't know why nobody seems to put the SANE interface info in C and Pascal header files. A couple of times, I wished the MPW folks had done so. Earle R. Horton
oster@dewey.soe.berkeley.edu (David Phillip Oster) (10/22/89)
By coincidence, I was just doing this yesterday. 1.) Lightspeed C and THINK C both include a file "sane.h" in the library folder that gives you most of the opcodes. There is a word or two about this file in the printed documentation, but not enough to help. 2.) the phonebook edition of Inside Mac has a preliminary version of the Apple Numerics Manual that includes most of the opcodes and a good discussion of the theory of SANe. 3.) What I was actually trying to do was ascii to float and float to ascii conversion. The C sprintf library takes 6800 or so bytes, and I needed the space. I had to dis-assemble Str2Dec and Dec2Str to figure out how they worked, but I got it going, saving about 5000 bytes. Time to buy a numerics manual. > The mac is a detour in the inevitable march of mediocre computers. > drs@bnlux0.bnl.gov (David R. Stampf) --- David Phillip Oster -master of the ad hoc odd hack. Arpa: oster@dewey.soe.berkeley.edu Uucp: {uwvax,decvax}!ucbvax!oster%dewey.soe.berkeley.edu
siegel@endor.harvard.edu (Rich Siegel) (10/22/89)
In article <934@unsvax.NEVADA.EDU> chris@arrakis.nevada.edu.uucp (Chris Hayes) writes: >call is. Unfortunately that is all IM says about _Pack4. Does anybody know >where I can find the list of opwords? I know of no local copies of the Apple >Numerics Manual. Does anyone know of an FTPable list? Any one care to type >one in? I don't need lengthy documentation, just a table of the Opwords and >what they mean. If you're using THINK C, the Sane.h header has the opcodes. MPW's C and assembly interfaces have the opcodes listed as well, I think. I don't care what anyone says, I think that floating-point math is a lot of fun... --Rich ~~~~~~~~~~~~~~~ Rich Siegel Staff Software Developer Symantec Corporation, Language Products Group Internet: siegel@endor.harvard.edu UUCP: ..harvard!endor!siegel "There is no personal problem which cannot be solved by sufficient application of high explosives." ~~~~~~~~~~~~~~~